io_ti.c revision bcbec053d2197031d04b8e040c61695b5d7a949d
1/* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 14 * 15 * For questions or problems with this driver, contact Inside Out 16 * Networks technical support, or Peter Berger <pberger@brimson.com>, 17 * or Al Borchers <alborchers@steinerpoint.com>. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/jiffies.h> 22#include <linux/errno.h> 23#include <linux/init.h> 24#include <linux/slab.h> 25#include <linux/tty.h> 26#include <linux/tty_driver.h> 27#include <linux/tty_flip.h> 28#include <linux/module.h> 29#include <linux/spinlock.h> 30#include <linux/mutex.h> 31#include <linux/serial.h> 32#include <linux/kfifo.h> 33#include <linux/ioctl.h> 34#include <linux/firmware.h> 35#include <linux/uaccess.h> 36#include <linux/usb.h> 37#include <linux/usb/serial.h> 38 39#include "io_16654.h" 40#include "io_usbvend.h" 41#include "io_ti.h" 42 43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 44#define DRIVER_DESC "Edgeport USB Serial Driver" 45 46#define EPROM_PAGE_SIZE 64 47 48 49/* different hardware types */ 50#define HARDWARE_TYPE_930 0 51#define HARDWARE_TYPE_TIUMP 1 52 53/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 54#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 55#define TI_MODE_BOOT 1 /* Staying in boot mode */ 56#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 57#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 58 transitioning to download mode */ 59 60/* read urb state */ 61#define EDGE_READ_URB_RUNNING 0 62#define EDGE_READ_URB_STOPPING 1 63#define EDGE_READ_URB_STOPPED 2 64 65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 66 67#define EDGE_OUT_BUF_SIZE 1024 68 69 70/* Product information read from the Edgeport */ 71struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74} __attribute__((packed)); 75 76struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 struct async_icount icount; 90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 91 waiting for msr change to 92 happen */ 93 struct edgeport_serial *edge_serial; 94 struct usb_serial_port *port; 95 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 96 spinlock_t ep_lock; 97 int ep_read_urb_state; 98 int ep_write_urb_in_use; 99 struct kfifo write_fifo; 100}; 101 102struct edgeport_serial { 103 struct product_info product_info; 104 u8 TI_I2C_Type; /* Type of I2C in UMP */ 105 u8 TiReadI2C; /* Set to TRUE if we have read the 106 I2c in Boot Mode */ 107 struct mutex es_lock; 108 int num_ports_open; 109 struct usb_serial *serial; 110}; 111 112 113/* Devices that this driver supports */ 114static const struct usb_device_id edgeport_1port_id_table[] = { 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 131 { } 132}; 133 134static const struct usb_device_id edgeport_2port_id_table[] = { 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 153 { } 154}; 155 156/* Devices that this driver supports */ 157static const struct usb_device_id id_table_combined[] = { 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 191 { } 192}; 193 194MODULE_DEVICE_TABLE(usb, id_table_combined); 195 196static unsigned char OperationalMajorVersion; 197static unsigned char OperationalMinorVersion; 198static unsigned short OperationalBuildNumber; 199 200static int closing_wait = EDGE_CLOSING_WAIT; 201static bool ignore_cpu_rev; 202static int default_uart_mode; /* RS232 */ 203 204static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 205 unsigned char *data, int length); 206 207static void stop_read(struct edgeport_port *edge_port); 208static int restart_read(struct edgeport_port *edge_port); 209 210static void edge_set_termios(struct tty_struct *tty, 211 struct usb_serial_port *port, struct ktermios *old_termios); 212static void edge_send(struct tty_struct *tty); 213 214/* sysfs attributes */ 215static int edge_create_sysfs_attrs(struct usb_serial_port *port); 216static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 217 218 219static int ti_vread_sync(struct usb_device *dev, __u8 request, 220 __u16 value, __u16 index, u8 *data, int size) 221{ 222 int status; 223 224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 226 value, index, data, size, 1000); 227 if (status < 0) 228 return status; 229 if (status != size) { 230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 231 __func__, size, status); 232 return -ECOMM; 233 } 234 return 0; 235} 236 237static int ti_vsend_sync(struct usb_device *dev, __u8 request, 238 __u16 value, __u16 index, u8 *data, int size) 239{ 240 int status; 241 242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 244 value, index, data, size, 1000); 245 if (status < 0) 246 return status; 247 if (status != size) { 248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 249 __func__, size, status); 250 return -ECOMM; 251 } 252 return 0; 253} 254 255static int send_cmd(struct usb_device *dev, __u8 command, 256 __u8 moduleid, __u16 value, u8 *data, 257 int size) 258{ 259 return ti_vsend_sync(dev, command, value, moduleid, data, size); 260} 261 262/* clear tx/rx buffers and fifo in TI UMP */ 263static int purge_port(struct usb_serial_port *port, __u16 mask) 264{ 265 int port_number = port->number - port->serial->minor; 266 267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 268 269 return send_cmd(port->serial->dev, 270 UMPC_PURGE_PORT, 271 (__u8)(UMPM_UART1_PORT + port_number), 272 mask, 273 NULL, 274 0); 275} 276 277/** 278 * read_download_mem - Read edgeport memory from TI chip 279 * @dev: usb device pointer 280 * @start_address: Device CPU address at which to read 281 * @length: Length of above data 282 * @address_type: Can read both XDATA and I2C 283 * @buffer: pointer to input data buffer 284 */ 285static int read_download_mem(struct usb_device *dev, int start_address, 286 int length, __u8 address_type, __u8 *buffer) 287{ 288 int status = 0; 289 __u8 read_length; 290 __be16 be_start_address; 291 292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 293 294 /* Read in blocks of 64 bytes 295 * (TI firmware can't handle more than 64 byte reads) 296 */ 297 while (length) { 298 if (length > 64) 299 read_length = 64; 300 else 301 read_length = (__u8)length; 302 303 if (read_length > 1) { 304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 305 } 306 be_start_address = cpu_to_be16(start_address); 307 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 308 (__u16)address_type, 309 (__force __u16)be_start_address, 310 buffer, read_length); 311 312 if (status) { 313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 314 return status; 315 } 316 317 if (read_length > 1) 318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 319 320 /* Update pointers/length */ 321 start_address += read_length; 322 buffer += read_length; 323 length -= read_length; 324 } 325 326 return status; 327} 328 329static int read_ram(struct usb_device *dev, int start_address, 330 int length, __u8 *buffer) 331{ 332 return read_download_mem(dev, start_address, length, 333 DTK_ADDR_SPACE_XDATA, buffer); 334} 335 336/* Read edgeport memory to a given block */ 337static int read_boot_mem(struct edgeport_serial *serial, 338 int start_address, int length, __u8 *buffer) 339{ 340 int status = 0; 341 int i; 342 343 for (i = 0; i < length; i++) { 344 status = ti_vread_sync(serial->serial->dev, 345 UMPC_MEMORY_READ, serial->TI_I2C_Type, 346 (__u16)(start_address+i), &buffer[i], 0x01); 347 if (status) { 348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 349 return status; 350 } 351 } 352 353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 354 __func__, start_address, length); 355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 356 357 serial->TiReadI2C = 1; 358 359 return status; 360} 361 362/* Write given block to TI EPROM memory */ 363static int write_boot_mem(struct edgeport_serial *serial, 364 int start_address, int length, __u8 *buffer) 365{ 366 int status = 0; 367 int i; 368 u8 *temp; 369 370 /* Must do a read before write */ 371 if (!serial->TiReadI2C) { 372 temp = kmalloc(1, GFP_KERNEL); 373 if (!temp) { 374 dev_err(&serial->serial->dev->dev, 375 "%s - out of memory\n", __func__); 376 return -ENOMEM; 377 } 378 status = read_boot_mem(serial, 0, 1, temp); 379 kfree(temp); 380 if (status) 381 return status; 382 } 383 384 for (i = 0; i < length; ++i) { 385 status = ti_vsend_sync(serial->serial->dev, 386 UMPC_MEMORY_WRITE, buffer[i], 387 (__u16)(i + start_address), NULL, 0); 388 if (status) 389 return status; 390 } 391 392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 394 395 return status; 396} 397 398 399/* Write edgeport I2C memory to TI chip */ 400static int write_i2c_mem(struct edgeport_serial *serial, 401 int start_address, int length, __u8 address_type, __u8 *buffer) 402{ 403 struct device *dev = &serial->serial->dev->dev; 404 int status = 0; 405 int write_length; 406 __be16 be_start_address; 407 408 /* We can only send a maximum of 1 aligned byte page at a time */ 409 410 /* calculate the number of bytes left in the first page */ 411 write_length = EPROM_PAGE_SIZE - 412 (start_address & (EPROM_PAGE_SIZE - 1)); 413 414 if (write_length > length) 415 write_length = length; 416 417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 418 __func__, start_address, write_length); 419 usb_serial_debug_data(dev, __func__, write_length, buffer); 420 421 /* Write first page */ 422 be_start_address = cpu_to_be16(start_address); 423 status = ti_vsend_sync(serial->serial->dev, 424 UMPC_MEMORY_WRITE, (__u16)address_type, 425 (__force __u16)be_start_address, 426 buffer, write_length); 427 if (status) { 428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 429 return status; 430 } 431 432 length -= write_length; 433 start_address += write_length; 434 buffer += write_length; 435 436 /* We should be aligned now -- can write 437 max page size bytes at a time */ 438 while (length) { 439 if (length > EPROM_PAGE_SIZE) 440 write_length = EPROM_PAGE_SIZE; 441 else 442 write_length = length; 443 444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 445 __func__, start_address, write_length); 446 usb_serial_debug_data(dev, __func__, write_length, buffer); 447 448 /* Write next page */ 449 be_start_address = cpu_to_be16(start_address); 450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 451 (__u16)address_type, 452 (__force __u16)be_start_address, 453 buffer, write_length); 454 if (status) { 455 dev_err(dev, "%s - ERROR %d\n", __func__, status); 456 return status; 457 } 458 459 length -= write_length; 460 start_address += write_length; 461 buffer += write_length; 462 } 463 return status; 464} 465 466/* Examine the UMP DMA registers and LSR 467 * 468 * Check the MSBit of the X and Y DMA byte count registers. 469 * A zero in this bit indicates that the TX DMA buffers are empty 470 * then check the TX Empty bit in the UART. 471 */ 472static int tx_active(struct edgeport_port *port) 473{ 474 int status; 475 struct out_endpoint_desc_block *oedb; 476 __u8 *lsr; 477 int bytes_left = 0; 478 479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 480 if (!oedb) { 481 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 482 return -ENOMEM; 483 } 484 485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 486 as not all platforms can do DMA 487 from stack */ 488 if (!lsr) { 489 kfree(oedb); 490 return -ENOMEM; 491 } 492 /* Read the DMA Count Registers */ 493 status = read_ram(port->port->serial->dev, port->dma_address, 494 sizeof(*oedb), (void *)oedb); 495 if (status) 496 goto exit_is_tx_active; 497 498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 499 500 /* and the LSR */ 501 status = read_ram(port->port->serial->dev, 502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 503 504 if (status) 505 goto exit_is_tx_active; 506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 507 508 /* If either buffer has data or we are transmitting then return TRUE */ 509 if ((oedb->XByteCount & 0x80) != 0) 510 bytes_left += 64; 511 512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 513 bytes_left += 1; 514 515 /* We return Not Active if we get any kind of error */ 516exit_is_tx_active: 517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 518 519 kfree(lsr); 520 kfree(oedb); 521 return bytes_left; 522} 523 524static void chase_port(struct edgeport_port *port, unsigned long timeout, 525 int flush) 526{ 527 int baud_rate; 528 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 529 struct usb_serial *serial = port->port->serial; 530 wait_queue_t wait; 531 unsigned long flags; 532 533 if (!timeout) 534 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 535 536 /* wait for data to drain from the buffer */ 537 spin_lock_irqsave(&port->ep_lock, flags); 538 init_waitqueue_entry(&wait, current); 539 add_wait_queue(&tty->write_wait, &wait); 540 for (;;) { 541 set_current_state(TASK_INTERRUPTIBLE); 542 if (kfifo_len(&port->write_fifo) == 0 543 || timeout == 0 || signal_pending(current) 544 || serial->disconnected) 545 /* disconnect */ 546 break; 547 spin_unlock_irqrestore(&port->ep_lock, flags); 548 timeout = schedule_timeout(timeout); 549 spin_lock_irqsave(&port->ep_lock, flags); 550 } 551 set_current_state(TASK_RUNNING); 552 remove_wait_queue(&tty->write_wait, &wait); 553 if (flush) 554 kfifo_reset_out(&port->write_fifo); 555 spin_unlock_irqrestore(&port->ep_lock, flags); 556 tty_kref_put(tty); 557 558 /* wait for data to drain from the device */ 559 timeout += jiffies; 560 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 561 && !serial->disconnected) { 562 /* not disconnected */ 563 if (!tx_active(port)) 564 break; 565 msleep(10); 566 } 567 568 /* disconnected */ 569 if (serial->disconnected) 570 return; 571 572 /* wait one more character time, based on baud rate */ 573 /* (tx_active doesn't seem to wait for the last byte) */ 574 baud_rate = port->baud_rate; 575 if (baud_rate == 0) 576 baud_rate = 50; 577 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 578} 579 580static int choose_config(struct usb_device *dev) 581{ 582 /* 583 * There may be multiple configurations on this device, in which case 584 * we would need to read and parse all of them to find out which one 585 * we want. However, we just support one config at this point, 586 * configuration # 1, which is Config Descriptor 0. 587 */ 588 589 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 590 __func__, dev->config->desc.bNumInterfaces); 591 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 592 __func__, dev->config->desc.bMaxPower * 2); 593 594 if (dev->config->desc.bNumInterfaces != 1) { 595 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 596 return -ENODEV; 597 } 598 599 return 0; 600} 601 602static int read_rom(struct edgeport_serial *serial, 603 int start_address, int length, __u8 *buffer) 604{ 605 int status; 606 607 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 608 status = read_download_mem(serial->serial->dev, 609 start_address, 610 length, 611 serial->TI_I2C_Type, 612 buffer); 613 } else { 614 status = read_boot_mem(serial, start_address, length, 615 buffer); 616 } 617 return status; 618} 619 620static int write_rom(struct edgeport_serial *serial, int start_address, 621 int length, __u8 *buffer) 622{ 623 if (serial->product_info.TiMode == TI_MODE_BOOT) 624 return write_boot_mem(serial, start_address, length, 625 buffer); 626 627 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 628 return write_i2c_mem(serial, start_address, length, 629 serial->TI_I2C_Type, buffer); 630 return -EINVAL; 631} 632 633 634 635/* Read a descriptor header from I2C based on type */ 636static int get_descriptor_addr(struct edgeport_serial *serial, 637 int desc_type, struct ti_i2c_desc *rom_desc) 638{ 639 int start_address; 640 int status; 641 642 /* Search for requested descriptor in I2C */ 643 start_address = 2; 644 do { 645 status = read_rom(serial, 646 start_address, 647 sizeof(struct ti_i2c_desc), 648 (__u8 *)rom_desc); 649 if (status) 650 return 0; 651 652 if (rom_desc->Type == desc_type) 653 return start_address; 654 655 start_address = start_address + sizeof(struct ti_i2c_desc) 656 + rom_desc->Size; 657 658 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 659 660 return 0; 661} 662 663/* Validate descriptor checksum */ 664static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 665{ 666 __u16 i; 667 __u8 cs = 0; 668 669 for (i = 0; i < rom_desc->Size; i++) 670 cs = (__u8)(cs + buffer[i]); 671 672 if (cs != rom_desc->CheckSum) { 673 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 674 return -EINVAL; 675 } 676 return 0; 677} 678 679/* Make sure that the I2C image is good */ 680static int check_i2c_image(struct edgeport_serial *serial) 681{ 682 struct device *dev = &serial->serial->dev->dev; 683 int status = 0; 684 struct ti_i2c_desc *rom_desc; 685 int start_address = 2; 686 __u8 *buffer; 687 __u16 ttype; 688 689 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 690 if (!rom_desc) { 691 dev_err(dev, "%s - out of memory\n", __func__); 692 return -ENOMEM; 693 } 694 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 695 if (!buffer) { 696 dev_err(dev, "%s - out of memory when allocating buffer\n", 697 __func__); 698 kfree(rom_desc); 699 return -ENOMEM; 700 } 701 702 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 703 status = read_rom(serial, 0, 1, buffer); 704 if (status) 705 goto out; 706 707 if (*buffer != UMP5152 && *buffer != UMP3410) { 708 dev_err(dev, "%s - invalid buffer signature\n", __func__); 709 status = -ENODEV; 710 goto out; 711 } 712 713 do { 714 /* Validate the I2C */ 715 status = read_rom(serial, 716 start_address, 717 sizeof(struct ti_i2c_desc), 718 (__u8 *)rom_desc); 719 if (status) 720 break; 721 722 if ((start_address + sizeof(struct ti_i2c_desc) + 723 rom_desc->Size) > TI_MAX_I2C_SIZE) { 724 status = -ENODEV; 725 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 726 break; 727 } 728 729 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 730 731 /* Skip type 2 record */ 732 ttype = rom_desc->Type & 0x0f; 733 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 734 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 735 /* Read the descriptor data */ 736 status = read_rom(serial, start_address + 737 sizeof(struct ti_i2c_desc), 738 rom_desc->Size, buffer); 739 if (status) 740 break; 741 742 status = valid_csum(rom_desc, buffer); 743 if (status) 744 break; 745 } 746 start_address = start_address + sizeof(struct ti_i2c_desc) + 747 rom_desc->Size; 748 749 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 750 (start_address < TI_MAX_I2C_SIZE)); 751 752 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 753 (start_address > TI_MAX_I2C_SIZE)) 754 status = -ENODEV; 755 756out: 757 kfree(buffer); 758 kfree(rom_desc); 759 return status; 760} 761 762static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 763{ 764 int status; 765 int start_address; 766 struct ti_i2c_desc *rom_desc; 767 struct edge_ti_manuf_descriptor *desc; 768 struct device *dev = &serial->serial->dev->dev; 769 770 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 771 if (!rom_desc) { 772 dev_err(dev, "%s - out of memory\n", __func__); 773 return -ENOMEM; 774 } 775 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 776 rom_desc); 777 778 if (!start_address) { 779 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 780 status = -ENODEV; 781 goto exit; 782 } 783 784 /* Read the descriptor data */ 785 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 786 rom_desc->Size, buffer); 787 if (status) 788 goto exit; 789 790 status = valid_csum(rom_desc, buffer); 791 792 desc = (struct edge_ti_manuf_descriptor *)buffer; 793 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 794 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 795 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 796 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 797 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 798 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 799 800exit: 801 kfree(rom_desc); 802 return status; 803} 804 805/* Build firmware header used for firmware update */ 806static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 807{ 808 __u8 *buffer; 809 int buffer_size; 810 int i; 811 int err; 812 __u8 cs = 0; 813 struct ti_i2c_desc *i2c_header; 814 struct ti_i2c_image_header *img_header; 815 struct ti_i2c_firmware_rec *firmware_rec; 816 const struct firmware *fw; 817 const char *fw_name = "edgeport/down3.bin"; 818 819 /* In order to update the I2C firmware we must change the type 2 record 820 * to type 0xF2. This will force the UMP to come up in Boot Mode. 821 * Then while in boot mode, the driver will download the latest 822 * firmware (padded to 15.5k) into the UMP ram. And finally when the 823 * device comes back up in download mode the driver will cause the new 824 * firmware to be copied from the UMP Ram to I2C and the firmware will 825 * update the record type from 0xf2 to 0x02. 826 */ 827 828 /* Allocate a 15.5k buffer + 2 bytes for version number 829 * (Firmware Record) */ 830 buffer_size = (((1024 * 16) - 512 ) + 831 sizeof(struct ti_i2c_firmware_rec)); 832 833 buffer = kmalloc(buffer_size, GFP_KERNEL); 834 if (!buffer) { 835 dev_err(dev, "%s - out of memory\n", __func__); 836 return -ENOMEM; 837 } 838 839 // Set entire image of 0xffs 840 memset(buffer, 0xff, buffer_size); 841 842 err = request_firmware(&fw, fw_name, dev); 843 if (err) { 844 dev_err(dev, "Failed to load image \"%s\" err %d\n", 845 fw_name, err); 846 kfree(buffer); 847 return err; 848 } 849 850 /* Save Download Version Number */ 851 OperationalMajorVersion = fw->data[0]; 852 OperationalMinorVersion = fw->data[1]; 853 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 854 855 /* Copy version number into firmware record */ 856 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 857 858 firmware_rec->Ver_Major = OperationalMajorVersion; 859 firmware_rec->Ver_Minor = OperationalMinorVersion; 860 861 /* Pointer to fw_down memory image */ 862 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 863 864 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 865 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 866 le16_to_cpu(img_header->Length)); 867 868 release_firmware(fw); 869 870 for (i=0; i < buffer_size; i++) { 871 cs = (__u8)(cs + buffer[i]); 872 } 873 874 kfree(buffer); 875 876 /* Build new header */ 877 i2c_header = (struct ti_i2c_desc *)header; 878 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 879 880 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 881 i2c_header->Size = (__u16)buffer_size; 882 i2c_header->CheckSum = cs; 883 firmware_rec->Ver_Major = OperationalMajorVersion; 884 firmware_rec->Ver_Minor = OperationalMinorVersion; 885 886 return 0; 887} 888 889/* Try to figure out what type of I2c we have */ 890static int i2c_type_bootmode(struct edgeport_serial *serial) 891{ 892 struct device *dev = &serial->serial->dev->dev; 893 int status; 894 u8 *data; 895 896 data = kmalloc(1, GFP_KERNEL); 897 if (!data) { 898 dev_err(dev, "%s - out of memory\n", __func__); 899 return -ENOMEM; 900 } 901 902 /* Try to read type 2 */ 903 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 904 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 905 if (status) 906 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 907 else 908 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 909 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 910 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 911 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 912 goto out; 913 } 914 915 /* Try to read type 3 */ 916 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 917 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 918 if (status) 919 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 920 else 921 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 922 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 923 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 924 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 925 goto out; 926 } 927 928 dev_dbg(dev, "%s - Unknown\n", __func__); 929 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 930 status = -ENODEV; 931out: 932 kfree(data); 933 return status; 934} 935 936static int bulk_xfer(struct usb_serial *serial, void *buffer, 937 int length, int *num_sent) 938{ 939 int status; 940 941 status = usb_bulk_msg(serial->dev, 942 usb_sndbulkpipe(serial->dev, 943 serial->port[0]->bulk_out_endpointAddress), 944 buffer, length, num_sent, 1000); 945 return status; 946} 947 948/* Download given firmware image to the device (IN BOOT MODE) */ 949static int download_code(struct edgeport_serial *serial, __u8 *image, 950 int image_length) 951{ 952 int status = 0; 953 int pos; 954 int transfer; 955 int done; 956 957 /* Transfer firmware image */ 958 for (pos = 0; pos < image_length; ) { 959 /* Read the next buffer from file */ 960 transfer = image_length - pos; 961 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 962 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 963 964 /* Transfer data */ 965 status = bulk_xfer(serial->serial, &image[pos], 966 transfer, &done); 967 if (status) 968 break; 969 /* Advance buffer pointer */ 970 pos += done; 971 } 972 973 return status; 974} 975 976/* FIXME!!! */ 977static int config_boot_dev(struct usb_device *dev) 978{ 979 return 0; 980} 981 982static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 983{ 984 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 985} 986 987/** 988 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 989 * 990 * This routine downloads the main operating code into the TI5052, using the 991 * boot code already burned into E2PROM or ROM. 992 */ 993static int download_fw(struct edgeport_serial *serial) 994{ 995 struct device *dev = &serial->serial->dev->dev; 996 int status = 0; 997 int start_address; 998 struct edge_ti_manuf_descriptor *ti_manuf_desc; 999 struct usb_interface_descriptor *interface; 1000 int download_cur_ver; 1001 int download_new_ver; 1002 1003 /* This routine is entered by both the BOOT mode and the Download mode 1004 * We can determine which code is running by the reading the config 1005 * descriptor and if we have only one bulk pipe it is in boot mode 1006 */ 1007 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1008 1009 /* Default to type 2 i2c */ 1010 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1011 1012 status = choose_config(serial->serial->dev); 1013 if (status) 1014 return status; 1015 1016 interface = &serial->serial->interface->cur_altsetting->desc; 1017 if (!interface) { 1018 dev_err(dev, "%s - no interface set, error!\n", __func__); 1019 return -ENODEV; 1020 } 1021 1022 /* 1023 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1024 * if we have more than one endpoint we are definitely in download 1025 * mode 1026 */ 1027 if (interface->bNumEndpoints > 1) 1028 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1029 else 1030 /* Otherwise we will remain in configuring mode */ 1031 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1032 1033 /********************************************************************/ 1034 /* Download Mode */ 1035 /********************************************************************/ 1036 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1037 struct ti_i2c_desc *rom_desc; 1038 1039 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1040 1041 status = check_i2c_image(serial); 1042 if (status) { 1043 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1044 return status; 1045 } 1046 1047 /* Validate Hardware version number 1048 * Read Manufacturing Descriptor from TI Based Edgeport 1049 */ 1050 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1051 if (!ti_manuf_desc) { 1052 dev_err(dev, "%s - out of memory.\n", __func__); 1053 return -ENOMEM; 1054 } 1055 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1056 if (status) { 1057 kfree(ti_manuf_desc); 1058 return status; 1059 } 1060 1061 /* Check version number of ION descriptor */ 1062 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1063 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1064 __func__, ti_cpu_rev(ti_manuf_desc)); 1065 kfree(ti_manuf_desc); 1066 return -EINVAL; 1067 } 1068 1069 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1070 if (!rom_desc) { 1071 dev_err(dev, "%s - out of memory.\n", __func__); 1072 kfree(ti_manuf_desc); 1073 return -ENOMEM; 1074 } 1075 1076 /* Search for type 2 record (firmware record) */ 1077 start_address = get_descriptor_addr(serial, 1078 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1079 if (start_address != 0) { 1080 struct ti_i2c_firmware_rec *firmware_version; 1081 u8 *record; 1082 1083 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1084 1085 firmware_version = kmalloc(sizeof(*firmware_version), 1086 GFP_KERNEL); 1087 if (!firmware_version) { 1088 dev_err(dev, "%s - out of memory.\n", __func__); 1089 kfree(rom_desc); 1090 kfree(ti_manuf_desc); 1091 return -ENOMEM; 1092 } 1093 1094 /* Validate version number 1095 * Read the descriptor data 1096 */ 1097 status = read_rom(serial, start_address + 1098 sizeof(struct ti_i2c_desc), 1099 sizeof(struct ti_i2c_firmware_rec), 1100 (__u8 *)firmware_version); 1101 if (status) { 1102 kfree(firmware_version); 1103 kfree(rom_desc); 1104 kfree(ti_manuf_desc); 1105 return status; 1106 } 1107 1108 /* Check version number of download with current 1109 version in I2c */ 1110 download_cur_ver = (firmware_version->Ver_Major << 8) + 1111 (firmware_version->Ver_Minor); 1112 download_new_ver = (OperationalMajorVersion << 8) + 1113 (OperationalMinorVersion); 1114 1115 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1116 __func__, firmware_version->Ver_Major, 1117 firmware_version->Ver_Minor, 1118 OperationalMajorVersion, 1119 OperationalMinorVersion); 1120 1121 /* Check if we have an old version in the I2C and 1122 update if necessary */ 1123 if (download_cur_ver < download_new_ver) { 1124 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1125 __func__, 1126 firmware_version->Ver_Major, 1127 firmware_version->Ver_Minor, 1128 OperationalMajorVersion, 1129 OperationalMinorVersion); 1130 1131 record = kmalloc(1, GFP_KERNEL); 1132 if (!record) { 1133 dev_err(dev, "%s - out of memory.\n", 1134 __func__); 1135 kfree(firmware_version); 1136 kfree(rom_desc); 1137 kfree(ti_manuf_desc); 1138 return -ENOMEM; 1139 } 1140 /* In order to update the I2C firmware we must 1141 * change the type 2 record to type 0xF2. This 1142 * will force the UMP to come up in Boot Mode. 1143 * Then while in boot mode, the driver will 1144 * download the latest firmware (padded to 1145 * 15.5k) into the UMP ram. Finally when the 1146 * device comes back up in download mode the 1147 * driver will cause the new firmware to be 1148 * copied from the UMP Ram to I2C and the 1149 * firmware will update the record type from 1150 * 0xf2 to 0x02. 1151 */ 1152 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1153 1154 /* Change the I2C Firmware record type to 1155 0xf2 to trigger an update */ 1156 status = write_rom(serial, start_address, 1157 sizeof(*record), record); 1158 if (status) { 1159 kfree(record); 1160 kfree(firmware_version); 1161 kfree(rom_desc); 1162 kfree(ti_manuf_desc); 1163 return status; 1164 } 1165 1166 /* verify the write -- must do this in order 1167 * for write to complete before we do the 1168 * hardware reset 1169 */ 1170 status = read_rom(serial, 1171 start_address, 1172 sizeof(*record), 1173 record); 1174 if (status) { 1175 kfree(record); 1176 kfree(firmware_version); 1177 kfree(rom_desc); 1178 kfree(ti_manuf_desc); 1179 return status; 1180 } 1181 1182 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1183 dev_err(dev, "%s - error resetting device\n", __func__); 1184 kfree(record); 1185 kfree(firmware_version); 1186 kfree(rom_desc); 1187 kfree(ti_manuf_desc); 1188 return -ENODEV; 1189 } 1190 1191 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1192 1193 /* Reset UMP -- Back to BOOT MODE */ 1194 status = ti_vsend_sync(serial->serial->dev, 1195 UMPC_HARDWARE_RESET, 1196 0, 0, NULL, 0); 1197 1198 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1199 1200 /* return an error on purpose. */ 1201 kfree(record); 1202 kfree(firmware_version); 1203 kfree(rom_desc); 1204 kfree(ti_manuf_desc); 1205 return -ENODEV; 1206 } 1207 kfree(firmware_version); 1208 } 1209 /* Search for type 0xF2 record (firmware blank record) */ 1210 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1211#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1212 sizeof(struct ti_i2c_firmware_rec)) 1213 __u8 *header; 1214 __u8 *vheader; 1215 1216 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1217 if (!header) { 1218 dev_err(dev, "%s - out of memory.\n", __func__); 1219 kfree(rom_desc); 1220 kfree(ti_manuf_desc); 1221 return -ENOMEM; 1222 } 1223 1224 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1225 if (!vheader) { 1226 dev_err(dev, "%s - out of memory.\n", __func__); 1227 kfree(header); 1228 kfree(rom_desc); 1229 kfree(ti_manuf_desc); 1230 return -ENOMEM; 1231 } 1232 1233 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1234 1235 /* 1236 * In order to update the I2C firmware we must change 1237 * the type 2 record to type 0xF2. This will force the 1238 * UMP to come up in Boot Mode. Then while in boot 1239 * mode, the driver will download the latest firmware 1240 * (padded to 15.5k) into the UMP ram. Finally when the 1241 * device comes back up in download mode the driver 1242 * will cause the new firmware to be copied from the 1243 * UMP Ram to I2C and the firmware will update the 1244 * record type from 0xf2 to 0x02. 1245 */ 1246 status = build_i2c_fw_hdr(header, dev); 1247 if (status) { 1248 kfree(vheader); 1249 kfree(header); 1250 kfree(rom_desc); 1251 kfree(ti_manuf_desc); 1252 return -EINVAL; 1253 } 1254 1255 /* Update I2C with type 0xf2 record with correct 1256 size and checksum */ 1257 status = write_rom(serial, 1258 start_address, 1259 HEADER_SIZE, 1260 header); 1261 if (status) { 1262 kfree(vheader); 1263 kfree(header); 1264 kfree(rom_desc); 1265 kfree(ti_manuf_desc); 1266 return -EINVAL; 1267 } 1268 1269 /* verify the write -- must do this in order for 1270 write to complete before we do the hardware reset */ 1271 status = read_rom(serial, start_address, 1272 HEADER_SIZE, vheader); 1273 1274 if (status) { 1275 dev_dbg(dev, "%s - can't read header back\n", __func__); 1276 kfree(vheader); 1277 kfree(header); 1278 kfree(rom_desc); 1279 kfree(ti_manuf_desc); 1280 return status; 1281 } 1282 if (memcmp(vheader, header, HEADER_SIZE)) { 1283 dev_dbg(dev, "%s - write download record failed\n", __func__); 1284 kfree(vheader); 1285 kfree(header); 1286 kfree(rom_desc); 1287 kfree(ti_manuf_desc); 1288 return -EINVAL; 1289 } 1290 1291 kfree(vheader); 1292 kfree(header); 1293 1294 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1295 1296 /* Tell firmware to copy download image into I2C */ 1297 status = ti_vsend_sync(serial->serial->dev, 1298 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1299 1300 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1301 if (status) { 1302 dev_err(dev, 1303 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1304 __func__); 1305 kfree(rom_desc); 1306 kfree(ti_manuf_desc); 1307 return status; 1308 } 1309 } 1310 1311 // The device is running the download code 1312 kfree(rom_desc); 1313 kfree(ti_manuf_desc); 1314 return 0; 1315 } 1316 1317 /********************************************************************/ 1318 /* Boot Mode */ 1319 /********************************************************************/ 1320 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1321 1322 /* Configure the TI device so we can use the BULK pipes for download */ 1323 status = config_boot_dev(serial->serial->dev); 1324 if (status) 1325 return status; 1326 1327 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1328 != USB_VENDOR_ID_ION) { 1329 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1330 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1331 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1332 goto stayinbootmode; 1333 } 1334 1335 /* We have an ION device (I2c Must be programmed) 1336 Determine I2C image type */ 1337 if (i2c_type_bootmode(serial)) 1338 goto stayinbootmode; 1339 1340 /* Check for ION Vendor ID and that the I2C is valid */ 1341 if (!check_i2c_image(serial)) { 1342 struct ti_i2c_image_header *header; 1343 int i; 1344 __u8 cs = 0; 1345 __u8 *buffer; 1346 int buffer_size; 1347 int err; 1348 const struct firmware *fw; 1349 const char *fw_name = "edgeport/down3.bin"; 1350 1351 /* Validate Hardware version number 1352 * Read Manufacturing Descriptor from TI Based Edgeport 1353 */ 1354 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1355 if (!ti_manuf_desc) { 1356 dev_err(dev, "%s - out of memory.\n", __func__); 1357 return -ENOMEM; 1358 } 1359 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1360 if (status) { 1361 kfree(ti_manuf_desc); 1362 goto stayinbootmode; 1363 } 1364 1365 /* Check for version 2 */ 1366 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1367 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1368 __func__, ti_cpu_rev(ti_manuf_desc)); 1369 kfree(ti_manuf_desc); 1370 goto stayinbootmode; 1371 } 1372 1373 kfree(ti_manuf_desc); 1374 1375 /* 1376 * In order to update the I2C firmware we must change the type 1377 * 2 record to type 0xF2. This will force the UMP to come up 1378 * in Boot Mode. Then while in boot mode, the driver will 1379 * download the latest firmware (padded to 15.5k) into the 1380 * UMP ram. Finally when the device comes back up in download 1381 * mode the driver will cause the new firmware to be copied 1382 * from the UMP Ram to I2C and the firmware will update the 1383 * record type from 0xf2 to 0x02. 1384 * 1385 * Do we really have to copy the whole firmware image, 1386 * or could we do this in place! 1387 */ 1388 1389 /* Allocate a 15.5k buffer + 3 byte header */ 1390 buffer_size = (((1024 * 16) - 512) + 1391 sizeof(struct ti_i2c_image_header)); 1392 buffer = kmalloc(buffer_size, GFP_KERNEL); 1393 if (!buffer) { 1394 dev_err(dev, "%s - out of memory\n", __func__); 1395 return -ENOMEM; 1396 } 1397 1398 /* Initialize the buffer to 0xff (pad the buffer) */ 1399 memset(buffer, 0xff, buffer_size); 1400 1401 err = request_firmware(&fw, fw_name, dev); 1402 if (err) { 1403 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1404 fw_name, err); 1405 kfree(buffer); 1406 return err; 1407 } 1408 memcpy(buffer, &fw->data[4], fw->size - 4); 1409 release_firmware(fw); 1410 1411 for (i = sizeof(struct ti_i2c_image_header); 1412 i < buffer_size; i++) { 1413 cs = (__u8)(cs + buffer[i]); 1414 } 1415 1416 header = (struct ti_i2c_image_header *)buffer; 1417 1418 /* update length and checksum after padding */ 1419 header->Length = cpu_to_le16((__u16)(buffer_size - 1420 sizeof(struct ti_i2c_image_header))); 1421 header->CheckSum = cs; 1422 1423 /* Download the operational code */ 1424 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1425 status = download_code(serial, buffer, buffer_size); 1426 1427 kfree(buffer); 1428 1429 if (status) { 1430 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1431 return status; 1432 } 1433 1434 /* Device will reboot */ 1435 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1436 1437 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1438 1439 /* return an error on purpose */ 1440 return -ENODEV; 1441 } 1442 1443stayinbootmode: 1444 /* Eprom is invalid or blank stay in boot mode */ 1445 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1446 serial->product_info.TiMode = TI_MODE_BOOT; 1447 1448 return 0; 1449} 1450 1451 1452static int ti_do_config(struct edgeport_port *port, int feature, int on) 1453{ 1454 int port_number = port->port->number - port->port->serial->minor; 1455 on = !!on; /* 1 or 0 not bitmask */ 1456 return send_cmd(port->port->serial->dev, 1457 feature, (__u8)(UMPM_UART1_PORT + port_number), 1458 on, NULL, 0); 1459} 1460 1461 1462static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1463{ 1464 int status = 0; 1465 1466 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1467 1468 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1469 if (status) 1470 return status; 1471 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1472 if (status) 1473 return status; 1474 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1475} 1476 1477/* Convert TI LSR to standard UART flags */ 1478static __u8 map_line_status(__u8 ti_lsr) 1479{ 1480 __u8 lsr = 0; 1481 1482#define MAP_FLAG(flagUmp, flagUart) \ 1483 if (ti_lsr & flagUmp) \ 1484 lsr |= flagUart; 1485 1486 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1487 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1488 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1489 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1490 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1491 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1492 1493#undef MAP_FLAG 1494 1495 return lsr; 1496} 1497 1498static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1499{ 1500 struct async_icount *icount; 1501 struct tty_struct *tty; 1502 1503 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1504 1505 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1506 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1507 icount = &edge_port->icount; 1508 1509 /* update input line counters */ 1510 if (msr & EDGEPORT_MSR_DELTA_CTS) 1511 icount->cts++; 1512 if (msr & EDGEPORT_MSR_DELTA_DSR) 1513 icount->dsr++; 1514 if (msr & EDGEPORT_MSR_DELTA_CD) 1515 icount->dcd++; 1516 if (msr & EDGEPORT_MSR_DELTA_RI) 1517 icount->rng++; 1518 wake_up_interruptible(&edge_port->delta_msr_wait); 1519 } 1520 1521 /* Save the new modem status */ 1522 edge_port->shadow_msr = msr & 0xf0; 1523 1524 tty = tty_port_tty_get(&edge_port->port->port); 1525 /* handle CTS flow control */ 1526 if (tty && C_CRTSCTS(tty)) { 1527 if (msr & EDGEPORT_MSR_CTS) { 1528 tty->hw_stopped = 0; 1529 tty_wakeup(tty); 1530 } else { 1531 tty->hw_stopped = 1; 1532 } 1533 } 1534 tty_kref_put(tty); 1535} 1536 1537static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1538 __u8 lsr, __u8 data) 1539{ 1540 struct async_icount *icount; 1541 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1542 LSR_FRM_ERR | LSR_BREAK)); 1543 struct tty_struct *tty; 1544 1545 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1546 1547 edge_port->shadow_lsr = lsr; 1548 1549 if (new_lsr & LSR_BREAK) 1550 /* 1551 * Parity and Framing errors only count if they 1552 * occur exclusive of a break being received. 1553 */ 1554 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1555 1556 /* Place LSR data byte into Rx buffer */ 1557 if (lsr_data) { 1558 tty = tty_port_tty_get(&edge_port->port->port); 1559 if (tty) { 1560 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1561 tty_kref_put(tty); 1562 } 1563 } 1564 1565 /* update input line counters */ 1566 icount = &edge_port->icount; 1567 if (new_lsr & LSR_BREAK) 1568 icount->brk++; 1569 if (new_lsr & LSR_OVER_ERR) 1570 icount->overrun++; 1571 if (new_lsr & LSR_PAR_ERR) 1572 icount->parity++; 1573 if (new_lsr & LSR_FRM_ERR) 1574 icount->frame++; 1575} 1576 1577 1578static void edge_interrupt_callback(struct urb *urb) 1579{ 1580 struct edgeport_serial *edge_serial = urb->context; 1581 struct usb_serial_port *port; 1582 struct edgeport_port *edge_port; 1583 struct device *dev; 1584 unsigned char *data = urb->transfer_buffer; 1585 int length = urb->actual_length; 1586 int port_number; 1587 int function; 1588 int retval; 1589 __u8 lsr; 1590 __u8 msr; 1591 int status = urb->status; 1592 1593 switch (status) { 1594 case 0: 1595 /* success */ 1596 break; 1597 case -ECONNRESET: 1598 case -ENOENT: 1599 case -ESHUTDOWN: 1600 /* this urb is terminated, clean up */ 1601 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1602 __func__, status); 1603 return; 1604 default: 1605 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1606 "%d\n", __func__, status); 1607 goto exit; 1608 } 1609 1610 if (!length) { 1611 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1612 goto exit; 1613 } 1614 1615 dev = &edge_serial->serial->dev->dev; 1616 usb_serial_debug_data(dev, __func__, length, data); 1617 1618 if (length != 2) { 1619 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1620 goto exit; 1621 } 1622 1623 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1624 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1625 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1626 port_number, function, data[1]); 1627 port = edge_serial->serial->port[port_number]; 1628 edge_port = usb_get_serial_port_data(port); 1629 if (!edge_port) { 1630 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1631 return; 1632 } 1633 switch (function) { 1634 case TIUMP_INTERRUPT_CODE_LSR: 1635 lsr = map_line_status(data[1]); 1636 if (lsr & UMP_UART_LSR_DATA_MASK) { 1637 /* Save the LSR event for bulk read 1638 completion routine */ 1639 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1640 __func__, port_number, lsr); 1641 edge_port->lsr_event = 1; 1642 edge_port->lsr_mask = lsr; 1643 } else { 1644 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1645 __func__, port_number, lsr); 1646 handle_new_lsr(edge_port, 0, lsr, 0); 1647 } 1648 break; 1649 1650 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1651 /* Copy MSR from UMP */ 1652 msr = data[1]; 1653 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1654 __func__, port_number, msr); 1655 handle_new_msr(edge_port, msr); 1656 break; 1657 1658 default: 1659 dev_err(&urb->dev->dev, 1660 "%s - Unknown Interrupt code from UMP %x\n", 1661 __func__, data[1]); 1662 break; 1663 1664 } 1665 1666exit: 1667 retval = usb_submit_urb(urb, GFP_ATOMIC); 1668 if (retval) 1669 dev_err(&urb->dev->dev, 1670 "%s - usb_submit_urb failed with result %d\n", 1671 __func__, retval); 1672} 1673 1674static void edge_bulk_in_callback(struct urb *urb) 1675{ 1676 struct edgeport_port *edge_port = urb->context; 1677 struct device *dev = &edge_port->port->dev; 1678 unsigned char *data = urb->transfer_buffer; 1679 struct tty_struct *tty; 1680 int retval = 0; 1681 int port_number; 1682 int status = urb->status; 1683 1684 switch (status) { 1685 case 0: 1686 /* success */ 1687 break; 1688 case -ECONNRESET: 1689 case -ENOENT: 1690 case -ESHUTDOWN: 1691 /* this urb is terminated, clean up */ 1692 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1693 return; 1694 default: 1695 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1696 } 1697 1698 if (status == -EPIPE) 1699 goto exit; 1700 1701 if (status) { 1702 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1703 return; 1704 } 1705 1706 port_number = edge_port->port->number - edge_port->port->serial->minor; 1707 1708 if (edge_port->lsr_event) { 1709 edge_port->lsr_event = 0; 1710 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1711 __func__, port_number, edge_port->lsr_mask, *data); 1712 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1713 /* Adjust buffer length/pointer */ 1714 --urb->actual_length; 1715 ++data; 1716 } 1717 1718 tty = tty_port_tty_get(&edge_port->port->port); 1719 if (tty && urb->actual_length) { 1720 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1721 if (edge_port->close_pending) 1722 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1723 __func__); 1724 else 1725 edge_tty_recv(dev, tty, data, urb->actual_length); 1726 edge_port->icount.rx += urb->actual_length; 1727 } 1728 tty_kref_put(tty); 1729 1730exit: 1731 /* continue read unless stopped */ 1732 spin_lock(&edge_port->ep_lock); 1733 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1734 retval = usb_submit_urb(urb, GFP_ATOMIC); 1735 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1736 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1737 1738 spin_unlock(&edge_port->ep_lock); 1739 if (retval) 1740 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1741} 1742 1743static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1744 unsigned char *data, int length) 1745{ 1746 int queued; 1747 1748 queued = tty_insert_flip_string(tty, data, length); 1749 if (queued < length) 1750 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1751 __func__, length - queued); 1752 tty_flip_buffer_push(tty); 1753} 1754 1755static void edge_bulk_out_callback(struct urb *urb) 1756{ 1757 struct usb_serial_port *port = urb->context; 1758 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1759 int status = urb->status; 1760 struct tty_struct *tty; 1761 1762 edge_port->ep_write_urb_in_use = 0; 1763 1764 switch (status) { 1765 case 0: 1766 /* success */ 1767 break; 1768 case -ECONNRESET: 1769 case -ENOENT: 1770 case -ESHUTDOWN: 1771 /* this urb is terminated, clean up */ 1772 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1773 __func__, status); 1774 return; 1775 default: 1776 dev_err_console(port, "%s - nonzero write bulk status " 1777 "received: %d\n", __func__, status); 1778 } 1779 1780 /* send any buffered data */ 1781 tty = tty_port_tty_get(&port->port); 1782 edge_send(tty); 1783 tty_kref_put(tty); 1784} 1785 1786static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1787{ 1788 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1789 struct edgeport_serial *edge_serial; 1790 struct usb_device *dev; 1791 struct urb *urb; 1792 int port_number; 1793 int status; 1794 u16 open_settings; 1795 u8 transaction_timeout; 1796 1797 if (edge_port == NULL) 1798 return -ENODEV; 1799 1800 port_number = port->number - port->serial->minor; 1801 switch (port_number) { 1802 case 0: 1803 edge_port->uart_base = UMPMEM_BASE_UART1; 1804 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1805 break; 1806 case 1: 1807 edge_port->uart_base = UMPMEM_BASE_UART2; 1808 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1809 break; 1810 default: 1811 dev_err(&port->dev, "Unknown port number!!!\n"); 1812 return -ENODEV; 1813 } 1814 1815 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1816 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1817 1818 dev = port->serial->dev; 1819 1820 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1821 init_waitqueue_head(&edge_port->delta_msr_wait); 1822 1823 /* turn off loopback */ 1824 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1825 if (status) { 1826 dev_err(&port->dev, 1827 "%s - cannot send clear loopback command, %d\n", 1828 __func__, status); 1829 return status; 1830 } 1831 1832 /* set up the port settings */ 1833 if (tty) 1834 edge_set_termios(tty, port, &tty->termios); 1835 1836 /* open up the port */ 1837 1838 /* milliseconds to timeout for DMA transfer */ 1839 transaction_timeout = 2; 1840 1841 edge_port->ump_read_timeout = 1842 max(20, ((transaction_timeout * 3) / 2)); 1843 1844 /* milliseconds to timeout for DMA transfer */ 1845 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1846 UMP_PIPE_TRANS_TIMEOUT_ENA | 1847 (transaction_timeout << 2)); 1848 1849 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1850 1851 /* Tell TI to open and start the port */ 1852 status = send_cmd(dev, UMPC_OPEN_PORT, 1853 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1854 if (status) { 1855 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1856 __func__, status); 1857 return status; 1858 } 1859 1860 /* Start the DMA? */ 1861 status = send_cmd(dev, UMPC_START_PORT, 1862 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1863 if (status) { 1864 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1865 __func__, status); 1866 return status; 1867 } 1868 1869 /* Clear TX and RX buffers in UMP */ 1870 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1871 if (status) { 1872 dev_err(&port->dev, 1873 "%s - cannot send clear buffers command, %d\n", 1874 __func__, status); 1875 return status; 1876 } 1877 1878 /* Read Initial MSR */ 1879 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1880 (__u16)(UMPM_UART1_PORT + port_number), 1881 &edge_port->shadow_msr, 1); 1882 if (status) { 1883 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1884 __func__, status); 1885 return status; 1886 } 1887 1888 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1889 1890 /* Set Initial MCR */ 1891 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1892 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1893 1894 edge_serial = edge_port->edge_serial; 1895 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1896 return -ERESTARTSYS; 1897 if (edge_serial->num_ports_open == 0) { 1898 /* we are the first port to open, post the interrupt urb */ 1899 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1900 if (!urb) { 1901 dev_err(&port->dev, 1902 "%s - no interrupt urb present, exiting\n", 1903 __func__); 1904 status = -EINVAL; 1905 goto release_es_lock; 1906 } 1907 urb->context = edge_serial; 1908 status = usb_submit_urb(urb, GFP_KERNEL); 1909 if (status) { 1910 dev_err(&port->dev, 1911 "%s - usb_submit_urb failed with value %d\n", 1912 __func__, status); 1913 goto release_es_lock; 1914 } 1915 } 1916 1917 /* 1918 * reset the data toggle on the bulk endpoints to work around bug in 1919 * host controllers where things get out of sync some times 1920 */ 1921 usb_clear_halt(dev, port->write_urb->pipe); 1922 usb_clear_halt(dev, port->read_urb->pipe); 1923 1924 /* start up our bulk read urb */ 1925 urb = port->read_urb; 1926 if (!urb) { 1927 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1928 __func__); 1929 status = -EINVAL; 1930 goto unlink_int_urb; 1931 } 1932 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1933 urb->context = edge_port; 1934 status = usb_submit_urb(urb, GFP_KERNEL); 1935 if (status) { 1936 dev_err(&port->dev, 1937 "%s - read bulk usb_submit_urb failed with value %d\n", 1938 __func__, status); 1939 goto unlink_int_urb; 1940 } 1941 1942 ++edge_serial->num_ports_open; 1943 1944 goto release_es_lock; 1945 1946unlink_int_urb: 1947 if (edge_port->edge_serial->num_ports_open == 0) 1948 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1949release_es_lock: 1950 mutex_unlock(&edge_serial->es_lock); 1951 return status; 1952} 1953 1954static void edge_close(struct usb_serial_port *port) 1955{ 1956 struct edgeport_serial *edge_serial; 1957 struct edgeport_port *edge_port; 1958 struct usb_serial *serial = port->serial; 1959 int port_number; 1960 1961 edge_serial = usb_get_serial_data(port->serial); 1962 edge_port = usb_get_serial_port_data(port); 1963 if (edge_serial == NULL || edge_port == NULL) 1964 return; 1965 1966 /* The bulkreadcompletion routine will check 1967 * this flag and dump add read data */ 1968 edge_port->close_pending = 1; 1969 1970 /* chase the port close and flush */ 1971 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 1972 1973 usb_kill_urb(port->read_urb); 1974 usb_kill_urb(port->write_urb); 1975 edge_port->ep_write_urb_in_use = 0; 1976 1977 /* assuming we can still talk to the device, 1978 * send a close port command to it */ 1979 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1980 port_number = port->number - port->serial->minor; 1981 1982 mutex_lock(&serial->disc_mutex); 1983 if (!serial->disconnected) { 1984 send_cmd(serial->dev, 1985 UMPC_CLOSE_PORT, 1986 (__u8)(UMPM_UART1_PORT + port_number), 1987 0, 1988 NULL, 1989 0); 1990 } 1991 mutex_unlock(&serial->disc_mutex); 1992 1993 mutex_lock(&edge_serial->es_lock); 1994 --edge_port->edge_serial->num_ports_open; 1995 if (edge_port->edge_serial->num_ports_open <= 0) { 1996 /* last port is now closed, let's shut down our interrupt urb */ 1997 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1998 edge_port->edge_serial->num_ports_open = 0; 1999 } 2000 mutex_unlock(&edge_serial->es_lock); 2001 edge_port->close_pending = 0; 2002} 2003 2004static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2005 const unsigned char *data, int count) 2006{ 2007 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2008 2009 if (count == 0) { 2010 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2011 return 0; 2012 } 2013 2014 if (edge_port == NULL) 2015 return -ENODEV; 2016 if (edge_port->close_pending == 1) 2017 return -ENODEV; 2018 2019 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2020 &edge_port->ep_lock); 2021 edge_send(tty); 2022 2023 return count; 2024} 2025 2026static void edge_send(struct tty_struct *tty) 2027{ 2028 struct usb_serial_port *port = tty->driver_data; 2029 int count, result; 2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2031 unsigned long flags; 2032 2033 spin_lock_irqsave(&edge_port->ep_lock, flags); 2034 2035 if (edge_port->ep_write_urb_in_use) { 2036 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2037 return; 2038 } 2039 2040 count = kfifo_out(&edge_port->write_fifo, 2041 port->write_urb->transfer_buffer, 2042 port->bulk_out_size); 2043 2044 if (count == 0) { 2045 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2046 return; 2047 } 2048 2049 edge_port->ep_write_urb_in_use = 1; 2050 2051 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2052 2053 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2054 2055 /* set up our urb */ 2056 port->write_urb->transfer_buffer_length = count; 2057 2058 /* send the data out the bulk port */ 2059 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2060 if (result) { 2061 dev_err_console(port, 2062 "%s - failed submitting write urb, error %d\n", 2063 __func__, result); 2064 edge_port->ep_write_urb_in_use = 0; 2065 /* TODO: reschedule edge_send */ 2066 } else 2067 edge_port->icount.tx += count; 2068 2069 /* wakeup any process waiting for writes to complete */ 2070 /* there is now more room in the buffer for new writes */ 2071 if (tty) 2072 tty_wakeup(tty); 2073} 2074 2075static int edge_write_room(struct tty_struct *tty) 2076{ 2077 struct usb_serial_port *port = tty->driver_data; 2078 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2079 int room = 0; 2080 unsigned long flags; 2081 2082 if (edge_port == NULL) 2083 return 0; 2084 if (edge_port->close_pending == 1) 2085 return 0; 2086 2087 spin_lock_irqsave(&edge_port->ep_lock, flags); 2088 room = kfifo_avail(&edge_port->write_fifo); 2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2090 2091 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2092 return room; 2093} 2094 2095static int edge_chars_in_buffer(struct tty_struct *tty) 2096{ 2097 struct usb_serial_port *port = tty->driver_data; 2098 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2099 int chars = 0; 2100 unsigned long flags; 2101 2102 if (edge_port == NULL) 2103 return 0; 2104 if (edge_port->close_pending == 1) 2105 return 0; 2106 2107 spin_lock_irqsave(&edge_port->ep_lock, flags); 2108 chars = kfifo_len(&edge_port->write_fifo); 2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2110 2111 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2112 return chars; 2113} 2114 2115static void edge_throttle(struct tty_struct *tty) 2116{ 2117 struct usb_serial_port *port = tty->driver_data; 2118 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2119 int status; 2120 2121 if (edge_port == NULL) 2122 return; 2123 2124 /* if we are implementing XON/XOFF, send the stop character */ 2125 if (I_IXOFF(tty)) { 2126 unsigned char stop_char = STOP_CHAR(tty); 2127 status = edge_write(tty, port, &stop_char, 1); 2128 if (status <= 0) { 2129 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2130 } 2131 } 2132 2133 /* if we are implementing RTS/CTS, stop reads */ 2134 /* and the Edgeport will clear the RTS line */ 2135 if (C_CRTSCTS(tty)) 2136 stop_read(edge_port); 2137 2138} 2139 2140static void edge_unthrottle(struct tty_struct *tty) 2141{ 2142 struct usb_serial_port *port = tty->driver_data; 2143 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2144 int status; 2145 2146 if (edge_port == NULL) 2147 return; 2148 2149 /* if we are implementing XON/XOFF, send the start character */ 2150 if (I_IXOFF(tty)) { 2151 unsigned char start_char = START_CHAR(tty); 2152 status = edge_write(tty, port, &start_char, 1); 2153 if (status <= 0) { 2154 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2155 } 2156 } 2157 /* if we are implementing RTS/CTS, restart reads */ 2158 /* are the Edgeport will assert the RTS line */ 2159 if (C_CRTSCTS(tty)) { 2160 status = restart_read(edge_port); 2161 if (status) 2162 dev_err(&port->dev, 2163 "%s - read bulk usb_submit_urb failed: %d\n", 2164 __func__, status); 2165 } 2166 2167} 2168 2169static void stop_read(struct edgeport_port *edge_port) 2170{ 2171 unsigned long flags; 2172 2173 spin_lock_irqsave(&edge_port->ep_lock, flags); 2174 2175 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2176 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2177 edge_port->shadow_mcr &= ~MCR_RTS; 2178 2179 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2180} 2181 2182static int restart_read(struct edgeport_port *edge_port) 2183{ 2184 struct urb *urb; 2185 int status = 0; 2186 unsigned long flags; 2187 2188 spin_lock_irqsave(&edge_port->ep_lock, flags); 2189 2190 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2191 urb = edge_port->port->read_urb; 2192 status = usb_submit_urb(urb, GFP_ATOMIC); 2193 } 2194 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2195 edge_port->shadow_mcr |= MCR_RTS; 2196 2197 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2198 2199 return status; 2200} 2201 2202static void change_port_settings(struct tty_struct *tty, 2203 struct edgeport_port *edge_port, struct ktermios *old_termios) 2204{ 2205 struct device *dev = &edge_port->port->dev; 2206 struct ump_uart_config *config; 2207 int baud; 2208 unsigned cflag; 2209 int status; 2210 int port_number = edge_port->port->number - 2211 edge_port->port->serial->minor; 2212 2213 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2214 2215 config = kmalloc (sizeof (*config), GFP_KERNEL); 2216 if (!config) { 2217 tty->termios = *old_termios; 2218 dev_err(dev, "%s - out of memory\n", __func__); 2219 return; 2220 } 2221 2222 cflag = tty->termios.c_cflag; 2223 2224 config->wFlags = 0; 2225 2226 /* These flags must be set */ 2227 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2228 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2229 config->bUartMode = (__u8)(edge_port->bUartMode); 2230 2231 switch (cflag & CSIZE) { 2232 case CS5: 2233 config->bDataBits = UMP_UART_CHAR5BITS; 2234 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2235 break; 2236 case CS6: 2237 config->bDataBits = UMP_UART_CHAR6BITS; 2238 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2239 break; 2240 case CS7: 2241 config->bDataBits = UMP_UART_CHAR7BITS; 2242 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2243 break; 2244 default: 2245 case CS8: 2246 config->bDataBits = UMP_UART_CHAR8BITS; 2247 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2248 break; 2249 } 2250 2251 if (cflag & PARENB) { 2252 if (cflag & PARODD) { 2253 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2254 config->bParity = UMP_UART_ODDPARITY; 2255 dev_dbg(dev, "%s - parity = odd\n", __func__); 2256 } else { 2257 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2258 config->bParity = UMP_UART_EVENPARITY; 2259 dev_dbg(dev, "%s - parity = even\n", __func__); 2260 } 2261 } else { 2262 config->bParity = UMP_UART_NOPARITY; 2263 dev_dbg(dev, "%s - parity = none\n", __func__); 2264 } 2265 2266 if (cflag & CSTOPB) { 2267 config->bStopBits = UMP_UART_STOPBIT2; 2268 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2269 } else { 2270 config->bStopBits = UMP_UART_STOPBIT1; 2271 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2272 } 2273 2274 /* figure out the flow control settings */ 2275 if (cflag & CRTSCTS) { 2276 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2277 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2278 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2279 } else { 2280 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2281 tty->hw_stopped = 0; 2282 restart_read(edge_port); 2283 } 2284 2285 /* if we are implementing XON/XOFF, set the start and stop 2286 character in the device */ 2287 config->cXon = START_CHAR(tty); 2288 config->cXoff = STOP_CHAR(tty); 2289 2290 /* if we are implementing INBOUND XON/XOFF */ 2291 if (I_IXOFF(tty)) { 2292 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2293 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2294 __func__, config->cXon, config->cXoff); 2295 } else 2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2297 2298 /* if we are implementing OUTBOUND XON/XOFF */ 2299 if (I_IXON(tty)) { 2300 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2301 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2302 __func__, config->cXon, config->cXoff); 2303 } else 2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2305 2306 tty->termios.c_cflag &= ~CMSPAR; 2307 2308 /* Round the baud rate */ 2309 baud = tty_get_baud_rate(tty); 2310 if (!baud) { 2311 /* pick a default, any default... */ 2312 baud = 9600; 2313 } else 2314 tty_encode_baud_rate(tty, baud, baud); 2315 2316 edge_port->baud_rate = baud; 2317 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2318 2319 /* FIXME: Recompute actual baud from divisor here */ 2320 2321 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2322 2323 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2324 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2325 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2326 dev_dbg(dev, "bParity: %d\n", config->bParity); 2327 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2328 dev_dbg(dev, "cXon: %d\n", config->cXon); 2329 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2330 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2331 2332 /* move the word values into big endian mode */ 2333 cpu_to_be16s(&config->wFlags); 2334 cpu_to_be16s(&config->wBaudRate); 2335 2336 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2337 (__u8)(UMPM_UART1_PORT + port_number), 2338 0, (__u8 *)config, sizeof(*config)); 2339 if (status) 2340 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2341 __func__, status); 2342 kfree(config); 2343} 2344 2345static void edge_set_termios(struct tty_struct *tty, 2346 struct usb_serial_port *port, struct ktermios *old_termios) 2347{ 2348 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2349 unsigned int cflag; 2350 2351 cflag = tty->termios.c_cflag; 2352 2353 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2354 tty->termios.c_cflag, tty->termios.c_iflag); 2355 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2356 old_termios->c_cflag, old_termios->c_iflag); 2357 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2358 2359 if (edge_port == NULL) 2360 return; 2361 /* change the port settings to the new ones specified */ 2362 change_port_settings(tty, edge_port, old_termios); 2363} 2364 2365static int edge_tiocmset(struct tty_struct *tty, 2366 unsigned int set, unsigned int clear) 2367{ 2368 struct usb_serial_port *port = tty->driver_data; 2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2370 unsigned int mcr; 2371 unsigned long flags; 2372 2373 spin_lock_irqsave(&edge_port->ep_lock, flags); 2374 mcr = edge_port->shadow_mcr; 2375 if (set & TIOCM_RTS) 2376 mcr |= MCR_RTS; 2377 if (set & TIOCM_DTR) 2378 mcr |= MCR_DTR; 2379 if (set & TIOCM_LOOP) 2380 mcr |= MCR_LOOPBACK; 2381 2382 if (clear & TIOCM_RTS) 2383 mcr &= ~MCR_RTS; 2384 if (clear & TIOCM_DTR) 2385 mcr &= ~MCR_DTR; 2386 if (clear & TIOCM_LOOP) 2387 mcr &= ~MCR_LOOPBACK; 2388 2389 edge_port->shadow_mcr = mcr; 2390 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2391 2392 restore_mcr(edge_port, mcr); 2393 return 0; 2394} 2395 2396static int edge_tiocmget(struct tty_struct *tty) 2397{ 2398 struct usb_serial_port *port = tty->driver_data; 2399 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2400 unsigned int result = 0; 2401 unsigned int msr; 2402 unsigned int mcr; 2403 unsigned long flags; 2404 2405 spin_lock_irqsave(&edge_port->ep_lock, flags); 2406 2407 msr = edge_port->shadow_msr; 2408 mcr = edge_port->shadow_mcr; 2409 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2410 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2411 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2412 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2413 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2414 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2415 2416 2417 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2418 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2419 2420 return result; 2421} 2422 2423static int edge_get_icount(struct tty_struct *tty, 2424 struct serial_icounter_struct *icount) 2425{ 2426 struct usb_serial_port *port = tty->driver_data; 2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2428 struct async_icount *ic = &edge_port->icount; 2429 2430 icount->cts = ic->cts; 2431 icount->dsr = ic->dsr; 2432 icount->rng = ic->rng; 2433 icount->dcd = ic->dcd; 2434 icount->tx = ic->tx; 2435 icount->rx = ic->rx; 2436 icount->frame = ic->frame; 2437 icount->parity = ic->parity; 2438 icount->overrun = ic->overrun; 2439 icount->brk = ic->brk; 2440 icount->buf_overrun = ic->buf_overrun; 2441 return 0; 2442} 2443 2444static int get_serial_info(struct edgeport_port *edge_port, 2445 struct serial_struct __user *retinfo) 2446{ 2447 struct serial_struct tmp; 2448 2449 if (!retinfo) 2450 return -EFAULT; 2451 2452 memset(&tmp, 0, sizeof(tmp)); 2453 2454 tmp.type = PORT_16550A; 2455 tmp.line = edge_port->port->serial->minor; 2456 tmp.port = edge_port->port->number; 2457 tmp.irq = 0; 2458 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2459 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2460 tmp.baud_base = 9600; 2461 tmp.close_delay = 5*HZ; 2462 tmp.closing_wait = closing_wait; 2463 2464 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2465 return -EFAULT; 2466 return 0; 2467} 2468 2469static int edge_ioctl(struct tty_struct *tty, 2470 unsigned int cmd, unsigned long arg) 2471{ 2472 struct usb_serial_port *port = tty->driver_data; 2473 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2474 struct async_icount cnow; 2475 struct async_icount cprev; 2476 2477 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2478 2479 switch (cmd) { 2480 case TIOCGSERIAL: 2481 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2482 return get_serial_info(edge_port, 2483 (struct serial_struct __user *) arg); 2484 case TIOCMIWAIT: 2485 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2486 cprev = edge_port->icount; 2487 while (1) { 2488 interruptible_sleep_on(&edge_port->delta_msr_wait); 2489 /* see if a signal did it */ 2490 if (signal_pending(current)) 2491 return -ERESTARTSYS; 2492 cnow = edge_port->icount; 2493 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2494 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2495 return -EIO; /* no change => error */ 2496 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2497 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2498 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2499 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2500 return 0; 2501 } 2502 cprev = cnow; 2503 } 2504 /* not reached */ 2505 break; 2506 } 2507 return -ENOIOCTLCMD; 2508} 2509 2510static void edge_break(struct tty_struct *tty, int break_state) 2511{ 2512 struct usb_serial_port *port = tty->driver_data; 2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2514 int status; 2515 int bv = 0; /* Off */ 2516 2517 /* chase the port close */ 2518 chase_port(edge_port, 0, 0); 2519 2520 if (break_state == -1) 2521 bv = 1; /* On */ 2522 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2523 if (status) 2524 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2525 __func__, status); 2526} 2527 2528static int edge_startup(struct usb_serial *serial) 2529{ 2530 struct edgeport_serial *edge_serial; 2531 int status; 2532 2533 /* create our private serial structure */ 2534 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2535 if (edge_serial == NULL) { 2536 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2537 return -ENOMEM; 2538 } 2539 mutex_init(&edge_serial->es_lock); 2540 edge_serial->serial = serial; 2541 usb_set_serial_data(serial, edge_serial); 2542 2543 status = download_fw(edge_serial); 2544 if (status) { 2545 kfree(edge_serial); 2546 return status; 2547 } 2548 2549 return 0; 2550} 2551 2552static void edge_disconnect(struct usb_serial *serial) 2553{ 2554} 2555 2556static void edge_release(struct usb_serial *serial) 2557{ 2558 kfree(usb_get_serial_data(serial)); 2559} 2560 2561static int edge_port_probe(struct usb_serial_port *port) 2562{ 2563 struct edgeport_port *edge_port; 2564 int ret; 2565 2566 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2567 if (!edge_port) 2568 return -ENOMEM; 2569 2570 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2571 GFP_KERNEL); 2572 if (ret) { 2573 kfree(edge_port); 2574 return -ENOMEM; 2575 } 2576 2577 spin_lock_init(&edge_port->ep_lock); 2578 edge_port->port = port; 2579 edge_port->edge_serial = usb_get_serial_data(port->serial); 2580 edge_port->bUartMode = default_uart_mode; 2581 2582 usb_set_serial_port_data(port, edge_port); 2583 2584 ret = edge_create_sysfs_attrs(port); 2585 if (ret) { 2586 kfifo_free(&edge_port->write_fifo); 2587 kfree(edge_port); 2588 return ret; 2589 } 2590 2591 return 0; 2592} 2593 2594static int edge_port_remove(struct usb_serial_port *port) 2595{ 2596 struct edgeport_port *edge_port; 2597 2598 edge_port = usb_get_serial_port_data(port); 2599 2600 edge_remove_sysfs_attrs(port); 2601 kfifo_free(&edge_port->write_fifo); 2602 kfree(edge_port); 2603 2604 return 0; 2605} 2606 2607/* Sysfs Attributes */ 2608 2609static ssize_t show_uart_mode(struct device *dev, 2610 struct device_attribute *attr, char *buf) 2611{ 2612 struct usb_serial_port *port = to_usb_serial_port(dev); 2613 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2614 2615 return sprintf(buf, "%d\n", edge_port->bUartMode); 2616} 2617 2618static ssize_t store_uart_mode(struct device *dev, 2619 struct device_attribute *attr, const char *valbuf, size_t count) 2620{ 2621 struct usb_serial_port *port = to_usb_serial_port(dev); 2622 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2623 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2624 2625 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2626 2627 if (v < 256) 2628 edge_port->bUartMode = v; 2629 else 2630 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2631 2632 return count; 2633} 2634 2635static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2636 store_uart_mode); 2637 2638static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2639{ 2640 return device_create_file(&port->dev, &dev_attr_uart_mode); 2641} 2642 2643static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2644{ 2645 device_remove_file(&port->dev, &dev_attr_uart_mode); 2646 return 0; 2647} 2648 2649 2650static struct usb_serial_driver edgeport_1port_device = { 2651 .driver = { 2652 .owner = THIS_MODULE, 2653 .name = "edgeport_ti_1", 2654 }, 2655 .description = "Edgeport TI 1 port adapter", 2656 .id_table = edgeport_1port_id_table, 2657 .num_ports = 1, 2658 .open = edge_open, 2659 .close = edge_close, 2660 .throttle = edge_throttle, 2661 .unthrottle = edge_unthrottle, 2662 .attach = edge_startup, 2663 .disconnect = edge_disconnect, 2664 .release = edge_release, 2665 .port_probe = edge_port_probe, 2666 .port_remove = edge_port_remove, 2667 .ioctl = edge_ioctl, 2668 .set_termios = edge_set_termios, 2669 .tiocmget = edge_tiocmget, 2670 .tiocmset = edge_tiocmset, 2671 .get_icount = edge_get_icount, 2672 .write = edge_write, 2673 .write_room = edge_write_room, 2674 .chars_in_buffer = edge_chars_in_buffer, 2675 .break_ctl = edge_break, 2676 .read_int_callback = edge_interrupt_callback, 2677 .read_bulk_callback = edge_bulk_in_callback, 2678 .write_bulk_callback = edge_bulk_out_callback, 2679}; 2680 2681static struct usb_serial_driver edgeport_2port_device = { 2682 .driver = { 2683 .owner = THIS_MODULE, 2684 .name = "edgeport_ti_2", 2685 }, 2686 .description = "Edgeport TI 2 port adapter", 2687 .id_table = edgeport_2port_id_table, 2688 .num_ports = 2, 2689 .open = edge_open, 2690 .close = edge_close, 2691 .throttle = edge_throttle, 2692 .unthrottle = edge_unthrottle, 2693 .attach = edge_startup, 2694 .disconnect = edge_disconnect, 2695 .release = edge_release, 2696 .port_probe = edge_port_probe, 2697 .port_remove = edge_port_remove, 2698 .ioctl = edge_ioctl, 2699 .set_termios = edge_set_termios, 2700 .tiocmget = edge_tiocmget, 2701 .tiocmset = edge_tiocmset, 2702 .write = edge_write, 2703 .write_room = edge_write_room, 2704 .chars_in_buffer = edge_chars_in_buffer, 2705 .break_ctl = edge_break, 2706 .read_int_callback = edge_interrupt_callback, 2707 .read_bulk_callback = edge_bulk_in_callback, 2708 .write_bulk_callback = edge_bulk_out_callback, 2709}; 2710 2711static struct usb_serial_driver * const serial_drivers[] = { 2712 &edgeport_1port_device, &edgeport_2port_device, NULL 2713}; 2714 2715module_usb_serial_driver(serial_drivers, id_table_combined); 2716 2717MODULE_AUTHOR(DRIVER_AUTHOR); 2718MODULE_DESCRIPTION(DRIVER_DESC); 2719MODULE_LICENSE("GPL"); 2720MODULE_FIRMWARE("edgeport/down3.bin"); 2721 2722module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2723MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2724 2725module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2726MODULE_PARM_DESC(ignore_cpu_rev, 2727 "Ignore the cpu revision when connecting to a device"); 2728 2729module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2730MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2731